/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
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 * 5. Products derived from this software may not be called "Apache",
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 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.poi.hssf.record;

import org.apache.poi.util.LittleEndian;

/**
 * Title:        Sup Book  <P>
 * Description:  A Extrenal Workbook Deciption (Sup Book)
 *               Its only a dummy record for making new ExternSheet Record <P>
 * REFERENCE:  <P>
 * @author Libin Roman (Vista Portal LDT. Developer)
 * @author Andrew C. Oliver (acoliver@apache.org)
 *
 */
public class SupBookRecord extends Record
{
    public final static short sid = 0x1AE;
    private short             field_1_number_of_sheets;
    private short             field_2_flag;


    public SupBookRecord()
    {
        setFlag((short)0x401);
    }

    /**
     * Constructs a Extern Sheet record and sets its fields appropriately.
     *
     * @param id     id must be 0x16 or an exception will be throw upon validation
     * @param size  the size of the data area of the record
     * @param data  data of the record (should not contain sid/len)
     */
    public SupBookRecord(short id, short size, byte[] data)
    {
        super(id, size, data);
    }

    /**
     * Constructs a Extern Sheet record and sets its fields appropriately.
     *
     * @param id     id must be 0x1ae or an exception will be throw upon validation
     * @param size  the size of the data area of the record
     * @param data  data of the record (should not contain sid/len)
     * @param offset of the record's data
     */
    public SupBookRecord(short id, short size, byte[] data, int offset)
    {
        super(id, size, data, offset);
    }

    protected void validateSid(short id)
    {
        if (id != sid)
        {
            throw new RecordFormatException("NOT An Supbook RECORD");
        }
    }

    /**
     * called by the constructor, should set class level fields.  Should throw
     * runtime exception for bad/icomplete data.
     *
     * @param data raw data
     * @param size size of data
     * @param offset of the record's data (provided a big array of the file)
     */
    protected void fillFields(byte [] data, short size, int offset)
    {
        //For now We use it only for one case
        //When we need to add an named range when no named ranges was
        //before it
        field_1_number_of_sheets = LittleEndian.getShort(data,offset+0);
        field_2_flag = LittleEndian.getShort(data,offset+2);
    }


    public String toString()
    {
        StringBuffer buffer = new StringBuffer();
        buffer.append("[SUPBOOK]\n");
        buffer.append("numberosheets = ").append(getNumberOfSheets()).append('\n');
        buffer.append("flag          = ").append(getFlag()).append('\n');
        buffer.append("[/SUPBOOK]\n");
        return buffer.toString();
    }

    /**
     * called by the class that is responsible for writing this sucker.
     * Subclasses should implement this so that their data is passed back in a
     * byte array.
     *
     * @param offset to begin writing at
     * @param data byte array containing instance data
     * @return number of bytes written
     */
    public int serialize(int offset, byte [] data)
    {
        LittleEndian.putShort(data, 0 + offset, sid);
        LittleEndian.putShort(data, 2 + offset, (short) 4);
        LittleEndian.putShort(data, 4 + offset, field_1_number_of_sheets);
        LittleEndian.putShort(data, 6 + offset, field_2_flag);

        return getRecordSize();
    }

    public void setNumberOfSheets(short number){
        field_1_number_of_sheets = number;
    }

    public short getNumberOfSheets(){
        return field_1_number_of_sheets;
    }

    public void setFlag(short flag){
        field_2_flag = flag;
    }

    public short getFlag() {
        return field_2_flag;
    }

    public int getRecordSize()
    {
        return 4 + 4;
    }

    public short getSid()
    {
        return this.sid;
    }
}
